Door locking mechanism



FIG. 1 is a front perspective view of a door locking mechanism showingmy new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

CLAIM The ornamental design for a door locking mechanism, as shown anddescribed.